:root {
    --primary: #2980b9;
    --primary-hover: #1a5276;
    --accent: #27ae60;
    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #17a2b8;

    --bg-body: #f0f2f5;
    --bg-body-gradient: #f0f2f5;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f0f0f0;
    --bg-navbar: rgba(255, 255, 255, 0.97);

    --text-primary: #1a2634;
    --text-secondary: #5a6d7e;
    --text-muted: #8899a6;

    --border-color: #dce3ea;
    --border-light: #eef2f5;

    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);

    --gradient-green: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    --gradient-blue: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    --gradient-cyan: linear-gradient(135deg, #e0f7fa 0%, #b2ebf2 100%);

    --stats-green: #2e7d32;
    --stats-blue: #1565c0;
    --stats-cyan: #00838f;

    --table-header-bg: rgba(0, 0, 0, 0.03);
    --table-stripe-bg: rgba(0, 0, 0, 0.02);
    --table-hover-bg: rgba(0, 0, 0, 0.04);
    --table-border: #dce3ea;

    --link-color: #2980b9;
    --btn-close-filter: none;

    --status-approved-bg: #d4edda;
    --status-approved-color: #155724;
    --status-error-bg: #f8d7da;
    --status-error-color: #721c24;

    --game-card-bg: var(--bg-card);
    --game-card-champion-bg: linear-gradient(145deg, #fff8e1, #fff3cd, #fff8e1);
    --game-card-runner-bg: var(--bg-card);
    --game-card-border: var(--border-color);
    --game-card-text: var(--text-primary);
    --game-card-text-muted: var(--text-muted);
    --game-modal-bg: var(--bg-card);
    --progress-track: rgba(0, 0, 0, 0.08);

    /* Login-Hintergrundbild (Auto-Silhouette): hell -> invertiert + multiply */
    --login-bg-opacity: 0.10;
    --login-bg-filter: invert(1) grayscale(100%);
    --login-bg-blend: multiply;
}

[data-theme="dark"] {
    --bg-body: #1a2634;
    --bg-body-gradient: linear-gradient(135deg, #1a2634 0%, #2c3e50 100%);
    --bg-card: #243447;
    --bg-input: #1e2d3d;
    --bg-hover: rgba(255, 255, 255, 0.06);
    --bg-navbar: rgba(26, 38, 52, 0.95);

    --text-primary: #ffffff;
    --text-secondary: #b8c5d0;
    --text-muted: #8899a6;

    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);

    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.4);

    --gradient-green: linear-gradient(135deg, #1b3a1f 0%, #2e5a32 100%);
    --gradient-blue: linear-gradient(135deg, #1a3a5c 0%, #2a4a6c 100%);
    --gradient-cyan: linear-gradient(135deg, #0a3a3f 0%, #1a4a4f 100%);

    --stats-green: #66bb6a;
    --stats-blue: #64b5f6;
    --stats-cyan: #4dd0e1;

    --table-header-bg: rgba(255, 255, 255, 0.05);
    --table-stripe-bg: rgba(255, 255, 255, 0.02);
    --table-hover-bg: rgba(255, 255, 255, 0.06);
    --table-border: rgba(255, 255, 255, 0.1);

    --link-color: #5dade2;
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);

    --status-approved-bg: rgba(39, 174, 96, 0.2);
    --status-approved-color: #66bb6a;
    --status-error-bg: rgba(231, 76, 60, 0.2);
    --status-error-color: #ff6b6b;

    --game-card-bg: linear-gradient(145deg, #1a2634, #0f1a24);
    --game-card-champion-bg: linear-gradient(145deg, #2a1f00, #1a1400, #2a1f00);
    --game-card-runner-bg: linear-gradient(145deg, #1e2a38, #15202c, #1e2a38);
    --game-card-border: rgba(255, 255, 255, 0.1);
    --game-card-text: #ffffff;
    --game-card-text-muted: #8899a6;
    --game-modal-bg: linear-gradient(145deg, #1a2634, #0f1a24);
    --progress-track: rgba(255, 255, 255, 0.1);

    /* Login-Hintergrundbild (Auto-Silhouette): dunkel -> screen, schwarz fällt weg */
    --login-bg-opacity: 0.30;
    --login-bg-filter: grayscale(100%);
    --login-bg-blend: screen;
}

body {
    background: var(--bg-body-gradient) !important;
    color: var(--text-primary) !important;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
}

.card, .stats-card, .filter-bar, .entry-card, .form-container, .table-container {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    box-shadow: var(--shadow);
}

.card {
    border-radius: 12px;
}

.card-header {
    background: var(--bg-hover, rgba(0,0,0,0.03));
    color: var(--text-primary);
    border-bottom-color: var(--border-color) !important;
}

[data-theme="dark"] .card-header {
    background: rgba(255, 255, 255, 0.08) !important;
    color: #ffffff !important;
}

.navbar {
    background: var(--bg-navbar) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color) !important;
    position: relative;
    z-index: 1030;
}

.unified-navbar .navbar-brand {
    font-weight: 700;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .unified-navbar .navbar-brand {
    color: #ffffff !important;
}

.unified-navbar .nav-link {
    color: var(--text-secondary) !important;
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
    transition: color 0.2s;
}

.unified-navbar .nav-link:hover,
.unified-navbar .nav-link.active {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .unified-navbar .nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
}

[data-theme="dark"] .unified-navbar .nav-link:hover,
[data-theme="dark"] .unified-navbar .nav-link.active {
    color: #ffffff !important;
}

.nav-tabs {
    border-bottom-color: var(--border-color) !important;
}

.nav-tabs .nav-link,
.nav.nav-tabs .nav-link,
ul.nav-tabs .nav-link {
    color: var(--text-secondary) !important;
    border-color: transparent !important;
    border-radius: 6px 6px 0 0 !important;
    margin-right: 2px;
    transition: all 0.2s ease;
    background: transparent !important;
}

.nav-tabs .nav-link:hover,
.nav.nav-tabs .nav-link:hover,
ul.nav-tabs .nav-link:hover {
    border-color: var(--border-color) !important;
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}

.nav-tabs .nav-link.active,
.nav.nav-tabs .nav-link.active,
ul.nav-tabs .nav-link.active,
.nav-tabs > .nav-item > .nav-link.active {
    background: var(--primary) !important;
    color: #ffffff !important;
    border-color: var(--primary) !important;
    font-weight: 600 !important;
}

.form-control, .form-select {
    background-color: var(--bg-input) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.form-control:focus, .form-select:focus {
    background-color: var(--bg-input) !important;
    border-color: var(--primary) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(41, 128, 185, 0.25) !important;
}

.form-control::placeholder {
    color: var(--text-muted) !important;
}

.form-label {
    color: var(--text-primary) !important;
}

.table {
    color: var(--text-primary) !important;
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--table-border);
    --bs-table-hover-bg: var(--table-hover-bg);
    --bs-table-hover-color: var(--text-primary);
}

.table thead th {
    background: var(--table-header-bg) !important;
    border-color: var(--table-border) !important;
    color: var(--text-secondary) !important;
    border-bottom: 2px solid var(--table-border) !important;
}

.table tbody td {
    border-color: var(--table-border) !important;
    color: var(--text-primary) !important;
}

.table tbody td.text-success {
    color: var(--bs-success) !important;
}

.table tbody td.text-warning {
    color: var(--bs-warning) !important;
}

.table tbody td.text-danger {
    color: var(--bs-danger) !important;
}

.table tbody td.text-muted {
    color: var(--text-secondary) !important;
}

.table tbody td.decided-col {
    color: var(--text-primary) !important;
}

.table tbody td.decided-col .text-muted,
.table tbody td.decided-col .text-secondary {
    color: var(--text-secondary) !important;
}

.table tfoot td.text-success, .table tfoot th.text-success {
    color: var(--bs-success) !important;
}

.table tfoot td.text-warning, .table tfoot th.text-warning {
    color: var(--bs-warning) !important;
}

.table tfoot td.text-danger, .table tfoot th.text-danger {
    color: var(--bs-danger) !important;
}

.table tfoot td.text-muted, .table tfoot th.text-muted {
    color: var(--text-secondary) !important;
}

.table tfoot td, .table tfoot th {
    background: var(--table-header-bg) !important;
    border-top: 2px solid var(--table-border) !important;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--table-stripe-bg);
}

.table-hover tbody tr:hover {
    background-color: var(--table-hover-bg) !important;
}

.dropdown-menu {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    box-shadow: var(--shadow-lg) !important;
    z-index: 1031;
}

[data-theme="dark"] .dropdown-menu {
    background: #1e2d3d !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
}

.dropdown-item {
    color: var(--text-primary) !important;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus {
    background: rgba(255, 255, 255, 0.1) !important;
    color: #ffffff !important;
}

.modal-content {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.modal-header, .modal-footer {
    border-color: var(--border-color) !important;
}

.modal-header .btn-close {
    filter: var(--btn-close-filter);
}

.btn-outline-secondary {
    color: var(--text-secondary) !important;
    border-color: var(--border-color) !important;
}

.btn-outline-secondary:hover {
    background: var(--bg-hover) !important;
    color: var(--text-primary) !important;
}

.btn-outline-primary {
    color: var(--primary) !important;
    border-color: var(--primary) !important;
}

.btn-outline-primary:hover {
    background: var(--primary) !important;
    color: #ffffff !important;
}

.btn-check:checked + .btn-outline-primary,
.btn-check:active + .btn-outline-primary,
.btn-outline-primary:active,
.btn-outline-primary.active {
    background-color: var(--primary) !important;
    border-color: var(--primary) !important;
    color: #ffffff !important;
}

.btn-check:focus + .btn-outline-primary,
.btn-outline-primary:focus {
    box-shadow: 0 0 0 0.2rem rgba(41, 128, 185, 0.4) !important;
}

.btn-primary {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: #ffffff !important;
}

.btn-primary:hover {
    background: var(--primary-hover) !important;
    border-color: var(--primary-hover) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary) !important;
}

p, span, label, small, li {
    color: var(--text-primary);
}

a:not(.btn):not(.nav-link):not(.dropdown-item):not(.navbar-brand):not(.list-group-item) {
    color: var(--link-color);
}

.entry-header:hover {
    background: var(--bg-hover) !important;
}

.entry-content {
    border-top-color: var(--border-light) !important;
}

.field-label {
    color: var(--text-secondary) !important;
}

.field-value {
    color: var(--text-primary) !important;
}

.action-btns button, .action-btns a {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.action-btns button:hover, .action-btns a:hover {
    background: var(--bg-hover) !important;
}

.stats-card.green { background: var(--gradient-green) !important; }
.stats-card.green .stats-number { color: var(--stats-green) !important; }
.stats-card.blue { background: var(--gradient-blue) !important; }
.stats-card.blue .stats-number { color: var(--stats-blue) !important; }
.stats-card.cyan { background: var(--gradient-cyan) !important; }
.stats-card.cyan .stats-number { color: var(--stats-cyan) !important; }
.stats-label { color: var(--text-secondary) !important; }

.accordion-button {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.accordion-button:not(.collapsed) {
    background: var(--bg-hover) !important;
}

.accordion-body {
    background: var(--bg-card) !important;
}

.accordion-item {
    border-color: var(--border-color) !important;
    background: var(--bg-card) !important;
}

.list-group-item {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.alert {
    border-color: var(--border-color) !important;
}

/* === Dark-mode Bootstrap alerts: app-weit garantierter Kontrast ===
   Container bekommen einen dunklen, halbtransparenten Hintergrund mit hellem
   Text. Verschachtelte Inhalte (strong, Überschriften, Links, .alert-link)
   erben bzw. erzwingen lesbare Farben, damit Templates KEINE inline-
   !important-Workarounds mehr brauchen. Badges mit eigener Kontext-Klasse
   (text-bg-*, bg-*) bringen ihre eigene Textfarbe mit und bleiben unberührt. */
[data-theme="dark"] .alert-info {
    background: rgba(23, 162, 184, 0.15) !important;
    color: #7ed0e6 !important;
    border-color: rgba(23, 162, 184, 0.4) !important;
}

[data-theme="dark"] .alert-warning {
    background: rgba(243, 156, 18, 0.15) !important;
    color: #ffd97a !important;
    border-color: rgba(243, 156, 18, 0.4) !important;
}

[data-theme="dark"] .alert-danger {
    background: rgba(231, 76, 60, 0.15) !important;
    color: #ff9a8f !important;
    border-color: rgba(231, 76, 60, 0.4) !important;
}

[data-theme="dark"] .alert-success {
    background: rgba(39, 174, 96, 0.15) !important;
    color: #86d99b !important;
    border-color: rgba(39, 174, 96, 0.4) !important;
}

/* Verschachtelte Text-Elemente erben die lesbare Alert-Farbe, auch wenn
   Bootstrap/Theme ihnen sonst eigene Farben gäbe. Badges sind ausgenommen –
   sie bringen über ihre Kontext-Klasse (text-bg bzw. bg) eine eigene,
   passende Textfarbe mit und sollen sie behalten. */
[data-theme="dark"] .alert-info :is(strong, b, p, div, span, li, ul, ol, small, u, h1, h2, h3, h4, h5, h6):not(.badge),
[data-theme="dark"] .alert-warning :is(strong, b, p, div, span, li, ul, ol, small, u, h1, h2, h3, h4, h5, h6):not(.badge),
[data-theme="dark"] .alert-danger :is(strong, b, p, div, span, li, ul, ol, small, u, h1, h2, h3, h4, h5, h6):not(.badge),
[data-theme="dark"] .alert-success :is(strong, b, p, div, span, li, ul, ol, small, u, h1, h2, h3, h4, h5, h6):not(.badge) {
    color: inherit !important;
}

/* Links / .alert-link in Alerts brauchen hellen, klar erkennbaren Text. */
[data-theme="dark"] .alert a:not(.btn):not(.badge),
[data-theme="dark"] .alert .alert-link {
    color: #ffffff !important;
    text-decoration: underline;
    font-weight: 600;
}

.breadcrumb { background: var(--bg-card); }
.breadcrumb-item + .breadcrumb-item::before { color: var(--text-muted); }

.page-link {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}
.page-link:hover { background: var(--bg-hover) !important; }
.page-item.active .page-link {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
}

.sidebar {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .loading-overlay { background: rgba(26, 38, 52, 0.9) !important; }
[data-theme="dark"] .loading-spinner { border-color: var(--border-color) !important; border-top-color: var(--primary) !important; }

.badge.bg-secondary { background-color: var(--text-muted) !important; }
[data-theme="dark"] img { opacity: 0.95; }

[data-theme="dark"] .btn-light {
    background: var(--bg-hover) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

input[type="date"], input[type="time"], input[type="datetime-local"] { color-scheme: light; }
[data-theme="dark"] input[type="date"],
[data-theme="dark"] input[type="time"],
[data-theme="dark"] input[type="datetime-local"] { color-scheme: dark; }

.form-check-label { color: var(--text-primary) !important; }
label { color: var(--text-primary); }
small { color: var(--text-secondary); }
.small { color: var(--text-secondary) !important; }

.bg-success.bg-opacity-10 { background-color: rgba(40, 167, 69, 0.1) !important; }
[data-theme="dark"] .bg-success.bg-opacity-10 { background-color: rgba(40, 167, 69, 0.25) !important; }

.list-group-item-success,
.list-group-item.list-group-item-success,
div.list-group-item-success {
    background-color: rgba(40, 167, 69, 0.15) !important;
    border-left: 4px solid #28a745 !important;
}

[data-theme="dark"] .list-group-item-success,
[data-theme="dark"] .list-group-item.list-group-item-success,
[data-theme="dark"] div.list-group-item-success {
    background-color: rgba(40, 167, 69, 0.3) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .accordion-button.bg-success.bg-opacity-10,
[data-theme="dark"] button.bg-success.bg-opacity-10 { background-color: rgba(40, 167, 69, 0.3) !important; }
[data-theme="dark"] .accordion-item.bg-success.bg-opacity-10,
[data-theme="dark"] div.bg-success.bg-opacity-10 { background-color: rgba(40, 167, 69, 0.3) !important; }

.status-approved { background: var(--status-approved-bg) !important; color: var(--status-approved-color) !important; }
.status-error { background: var(--status-error-bg) !important; color: var(--status-error-color) !important; }

[data-theme="dark"] .search-highlight { background: rgba(243, 156, 18, 0.3) !important; color: var(--text-primary) !important; }

.btn-close { filter: var(--btn-close-filter); }
.pagination-info { color: var(--text-secondary) !important; }

[data-theme="dark"] .weekend-col { background-color: rgba(255, 255, 255, 0.03) !important; }

.theme-toggle {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 9999;
    display: inline-flex;
    gap: 2px;
    padding: 3px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.theme-toggle button {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: all 0.2s;
}

.theme-toggle button:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.theme-toggle button.active {
    background: var(--primary);
    color: white;
}

.unified-navbar .navbar-toggler {
    border-color: var(--border-color);
}

.unified-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(90,109,126,1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .unified-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

[data-theme="dark"] .table-light,
[data-theme="dark"] .table-light th,
[data-theme="dark"] .table-light td,
[data-theme="dark"] thead.table-light {
    background-color: rgba(255, 255, 255, 0.05) !important;
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .img-thumbnail {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .badge.bg-light {
    background-color: rgba(255, 255, 255, 0.12) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .badge.text-dark {
    color: inherit !important;
}

[data-theme="dark"] .card-body {
    color: var(--text-primary);
}

[data-theme="dark"] .form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-color);
}

[data-theme="dark"] .form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}